treasure19 treasure19

17-01-2017
Chemistry

contestada

how many moles does 205g of helium, He contains ?

Respuesta :

Аноним Аноним

17-01-2017

Moles = weight in g / atomic weight So, moles in 40 g of He = 40 / 4 = 10 moles.

Answer Link

17-01-2017

19.512
i hope this helps

Answer Link

Otras preguntas

Which words in the sentence are the complete gerund phrase? There are many different ways of growing vegetables and flowers in small containers. A. vegetab

How many times does 3 go into 26

greg s homework assignment was to find allthe common factors of 28 and 42 so greg made a list of all the factors of 28 and 42 he used the list to find the fact

The New Imperialism in the United States occurred at the end of the 19th century for all the following reasons EXCEPT: A. to expand America's markets overseas B

what legal tools did the Roman Republic used to uphold the rule of law

An elemental trip through europe

Because it provides the majority of the world’s energy, most countries are dependent on __________. A. coal B. iron ore C. natural gas D. oil

Use the Pythagorean theorem to answer this question. A paper airplane is thrown westward at a rate of 6 m/s. The wind is blowing at 8 m/s toward the north. Wha

which of the following best describes spains treatment of the native americans A. N.A's were allowed to keep their own customs B. they were paid very little t

If an atom of nitrogen bonded with an atom of aluminum , what kind of bond would form